33 lines
1.2 KiB
JavaScript
33 lines
1.2 KiB
JavaScript
'use strict';
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/**
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* explain_distinct.js
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*
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* Runs explain() and distinct() on a collection.
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*/
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load('jstests/concurrency/fsm_libs/extend_workload.js'); // for extendWorkload
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load('jstests/concurrency/fsm_workloads/explain.js'); // for $config
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load('jstests/libs/analyze_plan.js'); // for planHasStage
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var $config = extendWorkload($config, function($config, $super) {
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$config.states = Object.extend({
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explainBasicDistinct: function(db, collName) {
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var res = db[collName].explain().distinct('i');
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assertAlways.commandWorked(res);
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assertAlways(planHasStage(res.queryPlanner.winningPlan, 'COLLSCAN'));
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},
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explainDistinctIndex: function(db, collName) {
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var res = db[collName].explain().distinct('_id');
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assertAlways.commandWorked(res);
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assertAlways(planHasStage(res.queryPlanner.winningPlan, 'PROJECTION'));
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assertAlways(planHasStage(res.queryPlanner.winningPlan, 'DISTINCT_SCAN'));
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}
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},
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$super.states);
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$config.transitions = Object.extend(
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{explain: $config.data.assignEqualProbsToTransitions($config.states)}, $super.transitions);
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return $config;
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});
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